None of the iflib based drivers were being matched by devmatch, because
the ignore fields were not actually ignored. strcmp does compare
the null terminator, so only strcmp("I:#" + 2, "#") would actually
return 0, but e.g. strcmp("I:#;" + 2, "#") returns 1.

Fixes: 5dedd2517db3 ("devmatch: Ignore the pnp fields tagged as ignore ('#')")

Try devmatching on e.g. an if_igc device before and after :)